package com.szjlc.requestbodyadvice.advice;

import com.szjlc.requestbodyadvice.result.BusinessResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 统一返回结果拦截器
 * @author steve
 * @since 2022-12-04 0:56
 */
@Slf4j
@RestControllerAdvice(basePackages = "com.szjlc.requestbodyadvice.controller")
public class ResponseAdvice implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter methodParameter, MediaType mediaType,
                                  Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest,
                                  ServerHttpResponse serverHttpResponse) {

        if (body instanceof BusinessResult) {
            return body;
        }

        if (body instanceof String) {
            log.debug("the response is String,body:{}", body);
            return body;
        }

        return BusinessResult.success(body);
    }
}
